Arkolith/Insider Trading/HDSN/Form 4

Houghton Kathleen

Sr. VP-Sales and Marketing, DirectorHUDSON TECHNOLOGIES INC /NY (HDSN) · full profile →Form 4 · filed Jan 12, 2026
No Open-Market Flow
Open-Market Buys
$0
Open-Market Sells
$0
Net Open-Market Flow
$0
Transactions
9
6 non-derivative · 3 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Jan 8, 2026Tax withholding(F)34K$7.10$244K159K
Jan 8, 2026Option exercise(M)51K$3.81$194K193K
Jan 8, 2026Option exercise(M)48K$1.60$76K164K
Jan 8, 2026Tax withholding(F)45K$7.10$319K116K
Jan 8, 2026Option exercise(M)120K$0.75$90K161K
Jan 8, 2026Tax withholding(F)22K$7.10$155K142K

Derivative Transactions (Table II)

DateActionSharesPriceValueOwned After
Jan 8, 2026Option exercise(M)51K—$00
Jan 8, 2026Option exercise(M)48K—$00
Jan 8, 2026Option exercise(M)120K—$00

Transaction Codes

F
Shares withheld for taxes
M
Option exercise / conversion

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0000925528-26-000002) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML